Nick Howitt skrev den 2019-01-12 21:58:
efficient way of blocking these messages? Can they be blocked earlier than smtpd_sender_restrictions?
: check valid recipient BEFORE valid sendersqq.com have SPF use it, if SPF is pass block this sender domain if its spam, report to qq.com and hope thay listen
use postscreen use dnsbl in postscreengoogle postscreen dnsbl, it have being posted nummer of thing to solve spamming
